package map;

import java.util.Collection;
import java.util.HashMap;
import java.util.Map;
import java.util.Set;
import java.util.function.BiConsumer;
import java.util.function.Consumer;

public class MapDemo2 {
    public static void main(String[] args) {
        Map<String,Integer>map = new HashMap<>();
        map.put("语文",99);
        map.put("数学",98);
        map.put("英语",99);
        map.put("物理",99);
        map.put("化学",99);
        System.out.println(map);

        Set<String>keySet = map.keySet();
//        keySet.forEach(new Consumer<String>() {
//            public void accept(String s) {
//                System.out.println(s);
//            }
//        });
//        for (String key:keySet){
//            System.out.println("key:"+key);
//        }
        //keySet.forEach(e-> System.out.println(e));
        keySet.forEach(System.out::println);

        Set<Map.Entry<String,Integer>>entrySet = map.entrySet();
        for (Map.Entry<String,Integer>e:entrySet){
            String key = e.getKey();
            Integer value = e.getValue();
            System.out.println(key+":"+value);
        }

        Collection<Integer>values = map.values();
        for (Integer value:values){
            System.out.println("value:"+value);
        }
        map.forEach(new BiConsumer<String, Integer>() {
            public void accept(String s, Integer v) {
                System.out.println(s+":"+v);
            }
        });
        map.forEach((s,v)-> System.out.println(s+":"+v));
    }
}
